Jack wasn’t saying anything, but the teacher smiled at him ___ he had done something clever.
| A．as if | B．even if |
| C．while | D．though |
相关试题
Could I speak to is in charge of International Sales please?
| A．who | B．what | C．whoever | D．whatever |
As there is less and less coal and oil, scientists are exploring new ways of making use of
energy, such as sunlight, wind and water 
for power and fuel.
| A．primary | B．alternative | C．instant | D．unique |
I can’t give you an answer right now. I’d like more time to consider my decision.
| A．still | B．fairly | C．quite | D．a lot |
Tom
, turn down the music. Why you make such a big noise while your baby sister is sleeping?
| A．must | B．would | C．should | D．may |
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